Small-size circuit breaker

The utility model discloses a small-size circuit breaker, comprising an insulation shell, as well as an operation mechanism, an arc extinction mechanism, an electromagnetic tripping protection mechanism, a thermal tripping protection mechanism and a wiring mechanism, which are arranged in the shell,...

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Bibliographic Details
Main Authors FAN WENKAI, ZHANG YINGLIN, JIN FUYIN
Format Patent
LanguageChinese
English
Published 03.10.2012
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRIC SWITCHES
ELECTRICITY
EMERGENCY PROTECTIVE DEVICES
RELAYS
SELECTORS
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Summary:The utility model discloses a small-size circuit breaker, comprising an insulation shell, as well as an operation mechanism, an arc extinction mechanism, an electromagnetic tripping protection mechanism, a thermal tripping protection mechanism and a wiring mechanism, which are arranged in the shell, wherein a switch on/off handle is arranged right above one end of a tripping coil, close to a static contact, and an arc extinction cover is arranged right below the tripping coil; a static contact supporting plate sequentially comprises an electric connecting plate area connected with one end of the stripping coil, a supporting plate area for fixedly connecting with and supporting static contacts, an arc striking area bent into a U shape, a positioning area located on a top wall of the arc extinction cover; and the small-size circuit breaker further comprises an arc striking plate, which sequentially comprises a limiting plate area located one side of a moving contact supporting plate, far away from the static co
Bibliography:Application Number: CN20122126755U